Rubber heel.



E. I. EMERY.

RUBBER H EEL. APPLICATION FILED DECLZZ. (916.

11232351, Patented July 10, 1917.

Leaders.

ELIAS .i. sienna", or ronrsiaoutrn, nswnemrsnranl i i HEEL.

T all whom it m concern:

Be it known'that l, ELiAs J. EMERY, a. citizen of the United States, and resident t -Portsmouth, in the county of Rockingham tread and State of New Hampshire, have invented" new and useful Improvements in Rubber Heels, of which the following is a specifica-= tion. 4

My invention relates to shoe heels of a. type, exemplified by my lnited States Patent No. 1,165,235, dated December 21, 1915, which is characterized by attachable and renewable elastic treads secured in the body.

of the shoe heel. The objects of the improvements herein described are to provide secure and intimate attachment of the treads to the body of the heel, to prolong the life of the treads themselves, and torender the shoe heel thus equipped agreeable to the wearer and free from liability to slip.

In the drawings hereto annexed, which illustrate my invention,

Figure 1 is a side elevation of a shoe heel, partly 1n section, at the line 11 of Fig. 2;

Fig. 2 is a View in plan of the bottom of a shoe heel; I

Fig. 3 is a vertical section of the heel, at line 33 of Fig. 2; and

a is a diagram showing thediinensional relationshipo'f the attachable tread stud and the part of the heel to Which it is attached.

In these figures, A represents the shoe heel, which. by preference is made of rubber, of the degree of stifiness and resiliency usual in the commercial rubber shoe-heel. B and B are attachable below the bottom of the heel body A, and are made of elastic, yielding materiahwhich practically means rubber. best results, the treadsB or B should. be of softer material than that of which the heel body A is composed, so as to be more readily distorted, more yielding under pressure, but nevertheless resilient so as to restore itself to normal shape When pressure is removed. It is important, also, to have the heel-body A also yielding and resilient, but not so soft and yielding as thetread B or B. Y

The treads, B and B are integrally united, by means of shanks C, with heads D, so that the head, shank and tread form a relatively soft rubber stud or button. The body A of the shoe heel is molded so as to provide apertures and anchorages for the B, shank C- and head D. These are,

Specification of Letterslatnt.

tightly in place.

under the conditions of wear.

treads, projecting tread-studs, the yielding character To obtain the Patented July iii, that.

Application filed. December 22, 1316 Serial No. l38,-363.

the shallouv -ecess l lnihfi botinthe'iveb F.

Since the tread-studs are to be renewable, secureinent thereof to the heel-body by ineans'of cement is undesirable. But in. order to adapt such tread-studs to the igencies of normal use, they should be held In order to fasten the tread-studs, which comprise the treads B, securely, the several members which enter into fastening relation are proportioned as indicated in Fig. l. The height 0' of the shank (3 when the shank is not stretched, is less than the thickness f of the web- F. Preferablyalso. the-diameter r:

of the shank (I when the shank not stretched, should be greater than the diameter g of the aperture G, so that. when the shank C is stretched so that its length equals the dimension f, its diameter will be about equal to the dimension 9.

The treads B and B are put in place by forcing the heads D through the apertures G, so that the shanks C, hold the treads B close to the body A of the ba ing stretched. will heel. The treads B andB which fit into the undercut recesses I will not become loose The superior softness of the treads, as contrasted with the body of the heel, make a very agreeable tread to Walk on, the yielding; of the treads under pressure prevents them from tearing either at the Wearing surface or elsewhere. the tension of the stretched shanks keeps the tread close to the heel, excluding water and dirt and preventingundue distortion of the of the heel body A, though inferior in degree to that ofthe treads B. shanks-C and heads D,

nevertheless. by yielding proportionately,"

saves the softer rubber and )rolon s its life.

I c -"\r I'he tread D which bridges across between two studs and heads. and the apertures provided for them. is a desirable modification of the treadstructure. particularly for use at the rear of a shoe heel. Taken to gether, the tread. shank and head constitute what 1 term a tread-stud. I

lWhat I claim and desire to secure by Lettors Patent is t- 1. In a shoe heel. the combination of a tread-stud comprising a tread, shank and head of elastic material. and a heel-body of elastic material, said body provided with an aperture for the shank of the tread-stud and a cavity to receive the head of the stud the length of the aperture being such that when the tread-stud is in place the shank thereof is stretched to strain the tread against the surface of the heel-body.

2. In a shoe heel. the combination of a tread-stud comprising a tread, shank and head of elastic material, and a heel-body of elastic material less yielding to distortive forces than the material of the tread-stud, said body provided with an aperture for the shank of the tread-stud and a cavity to 11 ceive the head of the stud, the length of the aperture being such that when the tread-stud is in place the shank thereof is stretched to strain the tread against the surface of the heel body.

Signed by me at Portsmouth, NeW'Hampshire, this 14th day of December, 1916. 4

' ELIAS J. EMERY."

Witnesses:

ALBERT R. HATCH,

NELLIE A. FALVEY. 

